Mercurial > hg > Feedworm

annotate Mapping.py @ 28:72dfae865899

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better logging when updating feeds, handle entries that have no id
author Dirk Olmes <dirk@xanthippe.ping.de>
date Thu, 29 Apr 2010 07:04:42 +0200
parents 215c34f61e95
children 74481aa49974
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8a624ee48a74 First skeleton for sqlalchemy: define the mapping and create the first feed
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2 from Feed import Feed
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e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
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3 from FeedEntry import FeedEntry
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4 from sqlalchemy import Column
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bfd47f55d85b add the updated date of the feed
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5 from sqlalchemy import DateTime
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e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
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6 from sqlalchemy import ForeignKey
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7 from sqlalchemy import Integer
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8 from sqlalchemy import MetaData
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9 from sqlalchemy import String
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10 from sqlalchemy import Table
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11 from sqlalchemy.orm import mapper
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12 from sqlalchemy.orm import relation
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14 def createMapping(engine):
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15 metadata = MetaData(engine)
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17 feedTable = Table("feed", metadata,
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18 Column("pk", Integer, primary_key=True),
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215c34f61e95 Feed.url -> Feed.rss_url
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19 Column("title", String(255), nullable=False),
215c34f61e95 Feed.url -> Feed.rss_url
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20 Column("rss_url", String(255), nullable=False)
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21 )
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23 feedEntryTable = Table("feed_entry", metadata,
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24 Column("pk", Integer, primary_key=True),
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87317ba41816 add a creation date for the feed entry
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25 Column("create_timestamp", DateTime, nullable=False),
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27 Column("id", String(255), nullable=False),
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28 Column("link", String(255), nullable=False),
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29 Column("title", String, nullable=False),
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30 Column("summary", String, nullable=False),
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31 Column("updated", DateTime),
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32 Column("feed_id", Integer, ForeignKey("feed.pk"))
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33 )
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35 metadata.create_all()
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37 mapper(FeedEntry, feedEntryTable)
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38 mapper(Feed, feedTable,
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39 properties = {
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40 "entries" : relation(FeedEntry, backref = "feed")
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41 }
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42 )